<!-- Begin
var how_many_ads = 4;
var now = new Date()
var sec = now.getSeconds()
var ad = sec % how_many_ads;
ad +=1;
if (ad==1) {
src="banners/bannerNatacion.jpg";
width="600";
height="250";
}
if (ad==2) {
src="banners/bannerRugby.jpg";
width="600";
height="250";
}
if (ad==3) {
src="banners/bannerTenis.jpg";
width="600";
height="250";
}
if (ad==4) {
src="banners/bannerVallas.jpg";
width="600";
height="250";
}
document.write('<center>');
document.write('<img src=\"' + src + '\" width=')
document.write(width + ' height=' + height + ' ');
document.write('</center>');
// End -->